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Yeast Overgrowth in Cats With Allergic Skin Disease

Ordeix, L., F. Galeotti, et al. (2007). “Malassezia spp. overgrowth in allergic cats.” Vet Dermatol 18(5): 316-23.

Malassezia (formerly known as Pityrosporum) are yeasts found on the skin surface of animals and humans. A series of 18 cats with skin disease is reported; 16 of which were diagnosed with atopic dermatitis. All were diagnosed with overgrowth of Malassezia on cytological examination or fungal culture. Skin lesions included multifocal alopecia, erythema, crusting and greasy adherent brownish scales. Treatment consisted of antifungal therapy alone, antifungal plus antibacterial therapy, or antifungal, antibacterial and anti-inflammatory therapy. After 3 to 4 weeks, substantial improvement was seen in all cats treated with combination therapy, and in 71% of cats treated with antifungal therapy alone. Malassezia overgrowth may be a secondary problem in some allergic cats, especially those with greasy adherent brownish scales.
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Related article:
Ahman, S., N. Perrins, et al. (2007). “Treatment of Malassezia pachydermatis-associated seborrhoeic dermatitis in Devon Rex cats with itraconazole–a pilot study.” Vet Dermatol 18(3): 171-4.